You're right to point out that Watkins is actually pretty efficient in his conversion rate. The point I was making though is that I don't think he's ready yet to make the step up to the next level. Scoring goals in the championship, particularly with us creating a lot of chances is quite different to scoring them in the Premiership/International level with the better quality defenders and far fewer chances that come along. With us, if he misses one, we all know that another chance will be along fairly soon after, but at a higher level there's no guarantee of that happening!Everyone misses some! I believe he has 18 goals from 57 shots this season, which is much more efficient than most strikers, including in the Premiership.
I've doubt whatsoever that Watkins will adapt to and flourish in the Premiership as a goal scorer, hopefully with us, but if not with someone else and when he does he'll come to the attention of the England setup. But he has to prove himself at that higher level first IMO.