If the bowser players gettign spiked a lot, he's recovering wrong. You go for dair, we use fortress and take advantage of Invincibility frames.
Bowser has a huge amount of kill moves. Bair, Uair, ftilt, dtilt, Out of release bowser bomb, Utilt (likely not going to work on samus) , >b (at higher precent), ^b (likely not going to work on samus) and his smashes.
It does. You can try to air dodge but chances are, your going to get hit (timing is hard).
-Bowser King
Alright but here's the thing.
An experienced Bowser versus a nonexperienced Samus has the advantage, not gonna dispute it.
But I believe that an experienced Bowser will have a hard time vs an experienced Samus because Samus can cut down Bowser's options with her moveset.
Bowser has one chance to survive Samus's edgeguarding, and Samus has many chances at gimping Bowser. I know it's going to be tough to gimp since Bowser has invincible frames and airdodges at his disposal, but his general size and the fact that his up b is not the most versatile thing ever (it gets decent horizontal distance, meh vertical) means that experienced Samus mains will shoot until they can dair spike... Bowser doesn't have the means to fight back as Samus shoots stuff at him.
Samus's zair outranges all of Bowser's kill moves. Some of them will be coming at different angles that zair will not affect, like uair... this is solved by bombs and smart airdodging.
Of course, Bowser should have ways around these, I just believe the somewhat larger advantage goes to Samus who can
-take advantage of bowser's recovery for hopeful kills
-outrange bowser
-"combo" bowser (kinda... b/c it's brawl)
Bowser can
-survive
-kill early
-damage more or less the same as Samus
-if gets through Samus's ranged place, can go crazy on Samus (kinda... b/c it's brawl)