Arnwyn said:
Absolutely true. 10 hours is indeed too short, regardless.
Along with what John Crichton posted, I'm also looking at other action-type games (which GoW is, as it's not really a FPS - but in any case, 'perspective' isn't enough to determine length!) such as Okami (30 hours) for comparison. But Halo, Halo 2, HL2, RE4, Metroid Prime, and God of War are all good comparisons.
Though time-lengths are indeed subjective. Twisted Bishop notes Halo 2 at being around 10 hours, when for my buddy and I it was 25 hours (and we're pretty decent).
But "10 hours" is too short. (And noting overly-short Xbox 360 games doesn't reflect on the 360 very well, either.)
GoW will be more of a Shooter than other games, like RE4, that involve gameplay above and beyond the combat. Even HL2 is probably longer based on the stupid puzzles. (How long does it take to stack bricks in order to hop up to a ledge at shoulder height...)
Halo2's length was short feeling, but the sentiments probably have more to do with the cliffhanger and Arbiter levels than the actual length. Heck, adding in replay value and Live, it's much exceded any reasonable mark for gametime for me.
So, Gears of Wars "10 hour" rating is comparable to other such games, even if not exact, and thus does fit for the actual originator arguement of "gauging memory size".
Sure they could make Gears longer than 10 hours, but it'd probably be by having you spend 3 hours searching the yard for 1 of 3 music boxes to be able to open a door... probably a simple wooden door with a regular doorknob, that cannot be opened by your Machinegun with Grenade Launcher and Buzzsaw attachments.
Heck, in FEAR: Extraction Point (a REAL short game, and just bad on every level), you can't enter doors because they say "no unathorized persons allowed". Sure you're fighting psychic clone horrors, but you can't open a door that says "don't open", that'd just be wrong!
If GoW has a 10 hour playtime, assuming you run directly from the start point to the exit point, then I'll probably get 25-35 hours out of it, then add on replay and online play and it'll be worth it.