 Bxe7 Qxe7 Black is probably slightly better.If White plays 6. e4 as he would in a Botvinnik variation with the bishop on g5, Black simply responds 6...b5 and this must be a much better version of the Botvinnik for Black since White lacks the usual counterplay with e4-e5 against the pinned knight.Finally, the same logic applies for 6. e3 b5, and white cannot claim having enough dynamic compensation for the pawn.