Not only too small. but more importantly spread out over too many years. It's bad enough to evaluate a guy on 70IP, but to do so on 70IP speard out over 8 seasons flies in the face of the exact human factor people are saying it is proof of.
If you want to cite these types of things as proof of choke or inability to perform under pressure, then you have to acknowledge that over time, Price, or any player is not the same person and has grown somewhat. And even f that player continues not to perform, it becomes less likely it is simply "choking" and more likely that it is just poor timing, bad luck, and small sample sizes.
Therefore long term post-season failures actually are more likely attributable to randomness. Although as teams in the post-season do tend to be better level of talent, we cannot eliminate them having good days, too...