I don't like it either. Borderlands is VERY repetitive. I played the first level with some freinds and I felt like I'd been playing that level about 5 times! The same critters came up and the guns were too similar and it was confusing to do upgrades as I had no idea if I was upgrading or side-grading as there were just too many options and levels. The characters and monsters were just blehhh.
RAGE was magnificent. Levels like The Jackal Canyon kick Borderlands into a rusty bucket. I wish they had played up the economy a bit with more of a trading feel. If not that, then just expanded the world a bit. I loved the graphics, the 'end of the world' feel and the running and gunning. I think if they hadn't just tacked on an ending, it may have been received better.
As to Wolf, I'm currently storming the U-Boat control room. Loads of fun and OTT weaponry. The only niggle is the weird 'make-work' side quests "Fetch me a welding torch- I can't be arsed" type of things. Apart from that. I'm loving it. The design work is particularly good. I even spotted a Nazified version of Lady Penelope's roller from Thunderbirds!