That is a completely bogus claim. most people on here have completed Skryim several times over by this time in less time than that.
I have 160 hours into skyrim and i have done the main quest three times now with different archetype characters along with the guild quests and all the side quests a couple of times that I could find in every city and town i discovered. Im sure i missed some here or there but at most that might add an extra few hours or so. In fact i was pretty much done with the game 120 hours in and that includes alot of just random dungeon diving and collecting loot, my last 40 some hours is mostly just messing around with cheat characters and trying to figure out what i want to change with mods.
I failed to see how you can reach 81 level, complete every non-repeating quest, talked to every NPC, collect every uniquely named item, collect every book, master every shout, acquire every spell, find every POI, get every enchantment effect and get every ingredient effect within a 160 hour playthough on a single character. Nevermind doing it over 3 characters.
Do you TCL and movetoqt all the way?