Hello aspirant,

From both of the above mentioned state level entrance exam, you will get some of the best Engineering colleges for CSE branch.

So, according to my opinion, since you'll get good colleges for CSE bracnch even from WBJEE or from COMEDK, you must go with COMEDK exam. The reason is that The Engineering Colleges in Southern India are far much batter than any Engineering colleges from other parts of the country. besides, the exposure and the social life in southern Indian Engineering Colleges are also very good.

I hope that this will help.