Not trying to make excuses for Steam here, but I'm sure if Origin had the huge install base that Steam did, there would be just as many slowdowns. As a side note, I can't remember the last time I've had a huge reduction in speed just because there was a bunch of people downloading. I'm almost always able to achieve 2.5MB downloads, unless it's a hugely popular game just released or patched, where it might go down to 1MB/sec or so.