Those signal levels aren't the best in the world, the downstream should be at 0 dBmV and the upstream should be in the 36 to 40 dBmV range. Having said that, they should still work. What plan are you on and what are the wired download / upload speeds you see from a speedcheck using http://speedcheck.rogers.com/en.html or www.speedtest.net using the Toronto Telus server?
Rogers Speed Test Results:
-I keep timing out
Speedtest.net (Toronto Telus Server):
-Upload: 0.03 (NOT ABLE TO FINISH THIS TEST)
I've waited a couple of hours and the download and upload seems to be fine however, the upstream and downstream are still not good (as @Datalink mentioned). I've noticed some delay in when playing games, especially shooters.