I liked how they were stranded on an island and were both looking and hunting for the treasure trying to find it first. Maybe legend doesn't like it because they didn't find a lost city at the endI think U4 was missing two big action sequences. One around the start, to break up the slower bits until they get to the end of Scotland. One around 3/4 through, so it isn't just the same jungle/ sunken building encounter over and over for like 2 or 3 hours at whatever point that is. That would have fixed two problems.
He probably doesn't like it because it's much more grounded than the first 3 uncharted games, which is ironically something I prefer. My main issue was with the pacing which was at times horrible and boring
Man, if it just had something of the quality of the ending action sequence in Lost Legacy it would be up there with U2.