I am not expert on the balance of power between Boeing and Airbus in Asia. Your numbers seem to indicate there is nothing between them at the moment.
However, worldwide it is clear who the current front runner is for future growth of existing airframes (of course things change quickly in aviation but this is as it stands now!) It looks possible that Boeing will have to introduce a new a/c type to compete in the short haul market. Thus a 737 rating could well prove a little more restrictive in terms of future job prospects. Of course, it is still a hugely viable option, but perhaps doesn't stand you in quite as good a position as an Airbus rating.
This article may be of interest -
FT.com / Companies / Aerospace & Defence - Boeing-Airbus dogfight flares up again