Mario's biggest problem IS killing people, it can get pretty annoying sometimes
his jab combo is awesome though but his fireballs are pretty much useless
im pretty sure that shroomed thing about picking mario because of fsmashes has to be a joke, it really feels like dr.mario has an advantage on mario, mainly because of killing power
As for fsmash, you can honestly just space it and get it to hit because it does have pretty sick range, when you add that to the fact most people don't know its range well on top of his fast wavelands tricks, you can definitely get some naked fsmashes in... i wish the inside hit wasn't so ******** though
Also at high percents if u dthrow fastfallers and they di away u can get fsmash and you can combo upair into fsmash on a lot of characters in a lot of situations
It's not that amazing of a kill move though, because its easy to di even though it is really strong... i mean when you compare it to doc's throw->fair and cape kills, it feels like mario's kill moves are much less reliable, besides bairing them offstage, he doesn't have much... dthrow nair doesn't kill until like 200%, i think you usually have to get a kill of some weird movement trick into like an upsmash on a floaty, or an unexpected dsmash on a spacie
I dunno, im not great with mario, but i just feel like if they di your "kill" moves up and recovery high, he doesn't have good coverage at all