Mickey, welcome to the boards
Sorry that you were met with some harsh comments, but here's why a few of your statements are .... disconcerting:
1. Every one of Sonic's ground moves can hit a Pit even while he's ducking. You know that you can angle an Fsmash so it aims downwards, right?
2. I'm not sure what you mean by "drill", is that Pit's side-B? It's really easy to get out of, just hit the control-stick and/or c-stick away from it (this is called smash-DI), you'll be out after taking only a small amount of damage, and you should be able to punish its ending-lag. Pit has to be
really careful to successfully wrack damage with his side-B. Then again, afaik it's used as a punisher; you shouldn't be getting hit by it often in the first place.
3. Spins are
not the best way to avoid arrows. Just powershield, spotdodge, or airdodge. This way you aren't committing to an approach, and Sonic's spinspecials are all quite punishable as approaches. Though you seem to know this.
4. Sonic definitely has an easier time avoiding Pit's arrows than a lot of other characters, so I don't see why it's such a big deal in this matchup.
Hope that clears up a few things. The people here have reason to be skeptical because many of us are competing in large tournaments, and have a very in-depth knowledge of the game mechanics, whereas new posters tend to lack rigour and perspective. I hope you can appreciate this.
and a great big roflcopter-induced facepalm for this one. I really hope some ppl accept his challenge ^_^