majors score more than minors. you only clearly lose out by bidding 2H when partner's 22 in the majors and even then if he's 2236 you're no worse off than passing 2D. 2D leaves you in a worse fit opposite (32)26, 3325, 3334 and an equal length but worse scoring fit opposite (32)44, 3343 and opposite all the hands with 5D you're normally going to score as well in a 43 major fit. anyway with an 11 count you should still bid 2NT over 2d because no trumps scores considerably better than diamonds whether it's the 1,2,3,4,5,6 or 7 level.