It's more than just a pain. It just won't work. Sometimes some of AT's asinine suggestions need to be thrown out. It works like this, simple math really...
Vegeta said he could beat everyone in Base while on the plane.
Who was on the plane? Android 18.
Is it true, possible or false?
Well we see his weaker, but respectable son put up a decent fight in horrible fighting conditions. Seems about right.
Piccolo was not on the plane, yet no mention of oh shit Piccolo is here we need Super Saiyan.
Then we do a little backtracking. Piccolo did decently against a Cell Jr, he's fucking strong.
Base Trunks although very powerful, is clearly not 10x stronger than 18, whereas we know Piccolo is.
Base Vegeta is not 10x stronger than Base Trunks, so he has no chance against Piccolo. It doesn't even seem likely that Vegeta is 2x stronger than Trunks at this stage.
So through the process of elimination we can safely determine that the statement is hogwash in regards to Piccolo...
Cell Jr > Piccolo >>>> Base Saiyan Adult > Base Saiyan Kids ~ 18