Point is... don't lie through your teeth period. Criticism exists for reasons, and with over 100 users replying that said map, character, or Picture is good, there will always be that #1 which will be brutally honest with you and say "This sucks". Sure, there will always be those who are outrageously abrupt with their reasons, but this is something that needs to be endured by the creator and absorbed so they won't make the same mistake again.
Put it this way... You make a pizza but it turns out burnt on 30% of it's surface. The Sauce has no flavor and the crust is as hard as a rock. Your friends look at the pizza; 2 of them grimacing from the very site of it. Sure they're being respectful to you by trying it, but once they taste it, are they going to be nice and say "this is the best damn pizza I ever ate"?