Both are bad

The answer is always yes.

debate whether we should start raping you or not

PonerPics, of course. Some interesting stats this led me to lookup:

Ponybooru has 14421 non-import uploads and 9274 users. This is a ratio of 1.55 uploads per user.
Twibooru has 6095 non-import uploads and 5464 users. This is a ratio of 1.12 uploads per user.
PonerPics has 10793 non-import uploads and 1574 users. This is a ratio of 6.86 uploads per user.

PonerPics apparently has the most productive userbase of the three per user. Of course it also imports from all of the other boorus. Interesting stuff even if it doesn't really mean much.

They're both shit.
Next question

Oh no I've summoned him! His wrath is upon us all!

top kek

Well I dunno. Do you like pictures, or do you like having pictures taken down because they don't obey the artist's demands?

alternatively how dare u post ur evil edits of dumbshwickmgee's art without getting his notarized approval you thief take this pic down nobody is allowed to know about it mods mods mods