The stats include batsman who played on the same team as the bowlers because it says Hayden's top score is 380 but he made that against Zimbabwe. So it is unfairly weighted for people like Hayden, Lara ect. because it is taking stats from almost every game they played, even against terrible bowling line ups.
I didn't want to link each page, but that is not how it worked! For each country's batsmen I went back to the query and eliminated his countrymen from the bowling list. eg. for Hayden, the numbers quoted in my post are not matches when the top 25 played, the final numbers are only where the 18 non-Australian bowlers played in the opposition.
i think, as with my tweaks that also showed sangakkara in a better light, it's fairer to take his record as a batsman separate to a batsman keeper, and that record is outstanding
I'm always sceptical of doing that. For starters because I don't believe keeping wicket makes you a worse batsman, any more than Jacques Kallis is a worse batsman because he bowled. A lot of keepers have better averages without the gloves, some are worse - AB de Villiers comes to mind. Any increase is probably down to confidence ie. if you are picked originally to keep, then picked later in your career as a batsman, your batting will naturally be boosted because you know the team has faith in you as a player even without your 2nd discipline.
The other problem is the idea is it shortens careers and opens up other cans of worms ie. if we consider Sangakkara without gloves, why not consider Clarke only as captain, or Tendulkar after he hit puberty (), or other subsets of a players career? I didn't want to add any other biases so just went for the whole lot. When I've got another afternoon to kill, maybe I can do some more tweaking and add some of these variables