In a nutshell:
Pros:
+Probably one of, if not, the best comboer in the game. That stands for a lot.
+Can kill very early with Dair spikes, Super jump punch, and a Down tilted or Up titled F smash.
+Moves have little to no lag. Very fast attacks.
+Dair spikes is waaaay more landable this time around
+D Throw. You can D throw to up B!
Cons:
-Although faster than Brawl on the ground, still slow movement wise both air and ground.
-Recovery is weaker than Brawl [But still usable]
-Struggles to approach [Fireballs are buffed from Brawl though]
-Sometimes struggles to get the kill [was rectified a tad in the recent patch, but still not as strong as Brawl]
Now comparing to Mario...
Pros:
+Better recovery distance wise
+Kills earlier.
+Combos better [Mario can only really do D throw to u tilt, which isn't always consistent]
Cons:
-Moves slower than Mario, it's noticeable.
-Worse offstage, Mario can gimp so much better.
That's what I can think of off the top of my head, have fun!
