well, one things for sure, the heatsink doesn't look that beefy. It may be a non-forged heatsink, which would further hinder performance.
It also doesn't appear to be much taller than the Taisol CEK733092.
And, lastly, Thermaltake Quality isn't exactly very high as far as relation to base-quality, which will probably hinder performance as well.
And then, their C/W ratings are usually fairly accurate.
Mike