I give this game a 6/10 for the following reasons.
This game but honestly didn't feel like Gears. Too many changes to attract the CoD/Casual players to the game.
In campaign the graphics and cinematography are great and some of the combat scenarios are fun but it's just got to much of an arcade feel with the star system popping up every 5 minutes. The story is short (approx. 5hrs), shallow and uninteresting. Not even close to being as funny as 1, 2 and 3.
Multiplayer is a real let down. The game only ships with four TDM/FFA maps and four Overrun/Survivor maps. No CoG v Locust in TDM and FFA. That's a major fail IMHO. Gears is CoG v Locust not CoG v CoG. The symmetrical maps are gone so so is the team strategy. We are reduced to running around like headless chickens. It just feels like they wanted to replicate CoD maps. The new weapons are pretty cool but they really don't make up for the pokey map layouts. The vertical aspect of the maps is ok but the sound needs fixing. Vey hard to understand who is where in TDM when all are CoG and wearing multi-colour armour skins that make the red/blue team colours hard to recognise.
My opinion only but the forums seem to replicate my thoughts in general so buy it and try it if you like but be prepared for a let down if you have played the previous Gears titles.