(This is the Warren Buffett Watch newsletter, news and analysis on all things Warren Buffett and Berkshire Hathaway. You can sign up here to receive it every Friday evening in your inbox.) He's no Warren Buffett, and thankfully, he's not trying to be Warren Buffett. But Greg Abel is getting decent, if not spectacular, reviews for  leading his first annual shareholders meeting as CEO . He's not the draw that Buffett and Munger have been over the years, with the CHI Health Center arena in Omaha a bit more than half full, although that turnout is still spectacular compared to the typical corporate annual meeting. Abel's detailed knowledge about Berkshire's operating businesses won praise, but the unexplained absence of substantial buybacks and a lack of clarity on the future of the equity portfolio and Berkshire's big cash pile are coming up as negatives. Check Capital Management Steve Check listed the positives for  CNBC.com's  Yun Li: "Very solid. No misspoke words. Thorough answers.…