I've played this matchup quite a bit, and I'm very sure Mario has the advantage.
Mario has better kill moves that are faster, stronger, and have better range/priority than Sonic's kill moves, he has projectile camping, and more priority on certain important attacks. Also Sonic really can't ledgeguard Mario AT ALL (spring gimping is destroyed by Mario's Up-B, not to mention all of Sonic's aerials).
The information that is incorrect is rather bothersome.
Fsmash=Better range than Ike's Fsmash. When both Mario and Sonic's Fsmashes are stutterstepped Sonics has more range.
Mario's is only slightly more powerful than Sonic's Fsmash and that is when it is sweetspotted.
Sonic's Dsmash also has more range and priority than Mario's Dsmash though Mario's is indeed faster. I am unsure about the killing power.
Usmash Mario's is more powerful and faster but Sonic's has greater range and much more priority due to the disjointed hitbox.
Sonic's Bair as more killing power than Mario's Bair and as a bit more range on it (due to a bit of a disjointed hitbox around his foot)
Mario cannot projectile camp Sonic. The reason for this is because of sonic's spincharge and spindash which go through Mario's fireballs. So Mario isn't going to be camping Sonic very easily.
Let alone the fact that camping ith the fireballs is rather poor due to their rather slow speed and limited versatility.
Sonic also has a greater amount of strings and combos that extend to higher percentages which Mariois lacking in.
Sonic can also set up kills at certain percentages that are guaranteed. (for example a Uthrow~Bair at around 100% on Marth is unavoidable).
Sonic can set up his kills more easily and can rack up damage in case he has issues killing.
Mario is not capable of stopping his gimp game.
Sonic has far more than just his spring and his spring will stillpose advantages.
Semispike on his Dair will clash with Mario's and kill mario.
Fair and Bair both knock at a mostly horizontal angle.
The spring is still good because if you plan to ^B it you will have to do so near the ledge, and if Sonic plans to gimp you he will drop a spring early to hamper your recovery attempts. It doens't need to hit you because you'll be forced to airdodge and fall even lower, slow your aeral movement and risk getting edgehogged.
Let alone the fact that has his D tilt, grab release and D throw for placing Mario beneath the stage for an early kill.
Mario also has a better grab game. Mario's D-throw has better setups than Sonic's other throws, and Mario's B-throw also does more damage and has more knockback than any of Sonic's throws.
You are raher uninformed.
Sonic's Dthrow is better than Mario's D throw.
From a D throw Sonic can chase the opponent for another D throw or any other grab, or go into an ASC combo for a guaranteed 32%, or use it to tech chase the opponent.
The D throw by itself can be used to knock the opponent off stage for an easy gimp kill.
B throw isn't as strong as Mario's B throw but I prefer Sonic's because I can use it for setting up a string.
Though mario's is much more preferable for killing than Sonic's.
U throw is better because of the damage and also because it sets up for early Uair kills.
Fthrow setup the opponent for Fair's, Bairs, Uairs and many other potential attacks.
No one cares I was asking about the amtchup betwen Mario vs Sonic not who is better.
[quote="fatmanonice]I call bull. There's way too many Sonic fanboys for him to be "underplayed." Luigi is underplayed. Toon Link is underplayed. Lucas is underplayed. I've run into too many Sonic players to even slightly believe this.[/quote]
Hypocrisy for the win.
You do know that there are far more Mario fanboys than Sonic fanboys right?
Sonic is an underplayed character in TOURNAMENTS.
I can care less for how many Sonic players you have faced outside of tournament settings.
Your evidence is anecdotal and does not prove anything when nationally, Sonic is shown as being underplayed.
If you disagree you can go to Ankoku's character ranking thread and look at the tournaments yourself.
The rest of your comment is rather stupid hence I ignored it.