If you don't underexpose, the 7D will give quite a good account of itself.
For all factors, that's pretty small. I would say the 7D still has some good attributes to consider: interface, speed, overall AF for a crop sensor. But most all current Canon APS sensors have as good if not better exposure control as the 7D. One minor point about the Rebel/ intro series of the Canons is that they do tend to meter regular "evaluative" a bit on the underexposure side. That's not a detriment: many a budding photographer these days will ask " why is my photo so washed out". For that initial reaction, I can see why the default Canon evaluative metering might side a bit towards underexposure. For those looking at histograms and aiming for the best exposure, as long as the graph is leaning towards right hand/ all within the extreme left and right hand sides, you're golden.