It’s difficult to compare these branches or any other branches of engineering until and unless you specify the parameters of comparison. Scope, placements, future opportunities, etc., play an important role in differentiating the branches. Also, you should choose based on your interest and future goal while opting for a branch rather than on such parameters.
Now, if you do not have any interest in any particular branch and like most of the students out there, are doing it for the B.Tech tag, you can opt for any of the branches. Both the branches at NIT Trichy are at par. You will get decent placement opportunities from both the branch, provided you maintain decent CGPA. According to the recent placement highlights, the average CTC offered by NIT Trichy is 6 LPA.