No -- you average out the extremes, so it is the worst of all worlds. If you want to go into rads, you need to know what the rads folks think. If you want to go to ortho you need to know what the ortho folks think. If one thinks a school is great while the other dislikes it, the average won't reflect this. And so eg in this situation if you eventually decided you really wanted ortho, this kind of grouped data screws you -- you will think the place better than the residency directors you care about do. You'd be much better off picking a school based on other parameters.
Truth of the matter is you can get into any specialty from any allo school -- most of it is going to be based on your board scores and rotation performance and research etc. So this kind of data is not so meaningful. But if you are going to look at this kind of data, you at least need to know its shortcomings, and why you shouldn't really be basing a decision on it. Bad or misapplied data is generally worse than no data.