All of this could easily be done in the span of an hour or a little more. At the mose approaching perhaps 2 hours if you recieved an above-average amount of really good entries.Are you fucking kidding me?!
To properly review a map, not to mention a whole mod - you have to play it for at least 2-3 times, to get to see every little detail, that might have costed the author some effort. Then, once choosing the trophy-winning entries, you are most likely to look through the custom stuff, the map/mod has to offer (like .wads, sounds, etc.), to get a better view of the ammount of time/effort spent on the entry.
1-2 hours?! Dude, judging 3 entries is one thing, but judging 10 or more entries in a row is fucking hell.. If you want an accurate evaluation - you'll have to check it out again tomorrow, maybe even a few days after.
Fuck it, you're one of the most active reviewers in the MV - you should know stuff like that.. :