pichu has a better air game than kirby and I can easily break it down and be right watch carefully.
1st off is the fact kirby has near no air speed pichu has better air speed but not puff like di or anything. so movement pichu wins clearly. yes I know kirby has more jumps which really fail if you can't avoid their attacks sure you jumped more and got more bairs in BUT if your hit at a decent percent like 50% your off the edge and WON't recover. You can't avoid their attacks they must run into your bairs you can't avoid and punish right and if you approach it doesn't work so basically you can't approach/avoid their attacks.
Air moves: nair is better than ANYMOVE kirby has hands down. edge gaurd, combos, sheild pressure, approach, COVERs great range, no lag, sheild/CC doesn't beat it, very fast,and with DDing/WDIng nair has more range tahn any of kirbys moves like how running SH knee covers more range than bowsers fair.
his air moves set up things like combos and pressure sheilds. kirby lacks this other than like dair tilt or sometimes bair bair or other rare cases. pichu dair is just as good of a kill move as most kirby's aur moves.
Approaching: pichu SHFFls nair like falcon with knee kirby like bowser SHFFLINg fair he may have greater range but less follow-ups and slower and much easier to punish. But techically kirby has better range when just falling.
also lets go to mid air comat you may think oh yeah kirby wins there again your wrong. pichu 2nd jump back to thunder is a very nice trap that many people run right into, same for jolts, and up-B around them to get below and combo them to death. pichu can easily create walls and get around them and fair to beat knees and outrange EVERYONEs but roy/marths dair with pichu's upair kirby can't out range anyones dair with his upair. kirby has to hope they don't out range him, be faster in air, or have a projectile or a way around him which means kirby ***** kirby's air game when above.
kirby would be better without his jumps in all truth. If he has just 2 simple jjumps like maybe mario high each then he won't need 2 jumps to reach every platform and you couldn't camp him nearly as easy.