hmm alot of b!tching in here i see lol.
Also, sin is an OK lucario at best nothing more.
Anyways, if you want to get better just come to the east coast......that simple. lol
QFT
Ive had a few problems with Peach too
I fought one that kept gimping me with turnips...lol(i didnt expect that)
But she has a tough time killing...thats her only flaw
Ive seen some very good Peach's...I hav a new respect for her now
Ive decided to pick her up as my 4th main...but shes a lil difficult to learn....lol
Btw how was your match with Peachy's Peach in Reo's Tourny?
oh that set was full of lulz
i was winning 2-0
then we randomly stopped and had to start over.
then she was winning 2-1
then we just stopped altogether and called it a draw (technically i won

)
1.2) Use PK Thunder as an edgeguard. It's safe, and he cant KO you when you're using it if he's off the stage. Try to catch him when he's gliding.
3) PK FIRE IS YOUR FRIEND! use it to keep MK away from you.
4) You can break him out of mach tornado with 4 of your moves: PKT, PKF, Dair and Pivot Grab.
5) unless MK is on his last stock and on high percentages and ur damage is low, NEVER USE UPSMASH!
2) PKT edgeguarding is pretty much the only option. you can pk freeze once when he's FAR away from the stage just for you know... trying. after that you can PKT other than that ehh... nothing's safe
if you're risky you could try to jump above him and time your bair spike to outprioritize his shuttle loop.
3) i use PK fire to keep him away, but more to force an mistake on the opponents end. pretty much as a trap.
4) you forgot nair, Dsmash, usmash and a perfectly spaced fsmash.
of course not all of those are likely to be used.
5) lol.
No reason not to use it if it'll hit. And by that I mean use it on guaranteed setups, like when he's in helpless for some reason sufficiently high, or if he's got a broken shield.
So yeah, never use it.
not never predict shuttle loop to glide attack.
as soon as shuttle loop begins. just time usmash to hit him. and it's not like it's hard to see coming. it also is a frequently used move.