Those projectiles all are normal priority. That's why they clang.
There are only two types of priority - normal priority and transcendent priority. Normal priority follows the law of high and low priority and is different in the air and the ground. Transcendent priority ignores the other priority rules. Projectiles that are not transcendent follow grounded priority rules. The law of high and low priority - if a move deals at least 9% more damage than another move, it will be outprioritzed and the weaker move will not affect the stronger move. Otherwise they clang.
So MK's attacks (minus a few) are transcendent.
Samus charge shot acts as a non-transcendent projectile (you can clank out a fully charged one with Bowser's later half of fsmash, or with Ganondorf fair, but not Marth dtilt).
Falco lasers are a transcendent projectile [as are Fox's].
Every projectile you named above is a non-transcendent projectile (that's why they follow the law of high and low priority and are clankable).
Link's attacks are (I believe entirely) not transcendent.
Marth's moveset is not transcendent.
Mach tornado is a little weird, as are a few other notable attacks, but everything you've listed here follows the rules I've given.
Don't believe me? Here's an article on it - you can do some of the tests they explain the results of (Bowser fsmash versus charge shot, Marth fsmash versus charge shot, etc.) if you don't believe the article from which I've pulled what I know:
http://www.ssbwiki.com/Priority
I'm also still waiting for Glyph to do actual arguing instead of simply trying to make arguments from authority and dismiss what I say without any explanation because he doesn't agree [I want him to explain why he thinks I'm wrong].
First things first, if we are putting Minus characters in vBrawl MK can pack up and go home, there is zero chance in hell of him beating Minus Falco in a vBrawl engine. But if we're putting him in the Minus engine, he can't momentum cancel because the game engine doesn't allow it - you can't have your cake and eat it too. So he's a lightweight like intended here. UNLESS everyone's been saying the whole time "If MK could airdodge out of hitstun and abuse Minus hitstun on everyone else, he'd win", and ok, well DUH!!! That's not what I've been arguing about though [and if that's what people were saying, well then pack up my arguments because we were never on the same topic to start).
Pikachu gets in in the vBrawl engine and Pikachu has a much better approach game in Minus with a few of its new tricks - MK can't even shut down Pikachu's approach in vBrawl from top players (See ESAM vs Ally at SKTAR 3), shutting down Minus Pikachu wouldn't happen at all. Pikachu's t-jolt is also much better for both camping and getting in, and for Thunder I was talking about edgeguarding and jab reset stuff - the meteor makes it useful more often then the old Thunder walls to stop his recovery, and the JC lets Pikachu use it with relative impunity as compared to vBrawl. His QA recovery is also much better because you don't have to QA directly onstage (the thing has a single frame of landing lag last I checked).
Falco getting gimped? LOL He's not even gimped that often in vBrawl if the Falco is good (go watch DEHF play, or maybe Bloodcross [he's not as good I don't think]) and he's got a pair of extra jumps to burn and a better firebird. MK isn't some god - he has slow airspeed and he can't cover all those options as easily as you make it out (And Falco can also just jump back onstage with all those jumps - if hit high, side+B high or something - he can also mixup sideB with his walljump - heck Melee Falco can recover against Jiggs unless Jiggs makes the perfect reads so there's not a chance Minus Falco would somehow be at a disadvantage offstage versus MK unless he's WAY too predictable).
Falco's onstage game is now much more scary with his zero-deathing fair and his phantasm being usable at any time, even after double lasers - things have only gotten better for Falco and they were already really, really good considering the cast as a whole.
Bowser's dair, RR through any attacks, up+B OoS. And unless they edited Bowser's grab release animation, Bowser would still have his grab release shenanigans that would give MK headaches since they would also combo into his RR - that's be like 2 grabs = stock if done right, or maybe even one).
Olimar really only loses to MK because of the massive gimping problems and some issues with rushdown - he'd now have a better sideB, significantly less gimping issues (if there is no super armor on whistle then he'd have moved sideways I guess), and dtilt as a great option to both run away and apply his own rushdown.
All of you massively overestimate vBrawl MK relative to the new options Minus characters have. MK is good, but he's not THAT good - he had a bunch of -1 MUs in vBrawl [and an even one] and they've only improved with Minus buffs.
