Nl 10 zoom PS or NL 25 regular 888 poker

NL10 zoom on pokerstars vs NL25 regular on 888 Poker, which is more difficult? :hmmmm2:

On the one hand we have the far NL10 PS (room that has the strongest field) and on the other hand we have reg table NL25 (the first level where you really will be explored and will have to go beyond ABC poker) 888poker (well over soft room).But which of them is more difficult, why?

with no rb on ps it is zoom more hard now