I agree, though it's sort of not really a fair comparison, in some ways, since they're such different media. I think my own personal issue is that RDJ/Jude Law have so much chemistry, it's like you're literally left on the edge of your seat during both movies wondering, "OMG, are they going to start making out?" It's that palpable. Whereas, on the other hand, the BBC Sherlock tells fantastic stories -- arguably better thought out and executed than the movies -- but the chemistry between John/Sherlock (Martin/Benedict) just isn't there. At least not in comparison to RDJ/JL.

So, then, I think it largely depends on what you're looking for and what sort of entertainment you want. Both are great in their own way, but if we're talking actual preferences here, then I definitely prefer Ritchie!verse!Sherlock Holmes to BBC!Sherlock.