How could you say that? Mourinho has never had to work under any sort of strain or external influence. Wenger has turned us from an average Premier League side into a club respected over Europe. The stadium handicapped us initially but he still did remarkably well to keep us in the top 4, all that with a young and sometimes average squad as well. I'm not saying Wenger it out right better than Mourinho, both have their relative merits but I think what Wenger has achieved is on the whole far more impressive.