Hey,

Both the courses , if you study best will give you oppurtunities.

We cant choose between btech or b arch based money crieria.

It all depends on your true interest and passion.

If you have good interest in a course you can give the best out of it.

If you choose any high earning course and couldnt study good then there is no use.

So choose course based on your interest primary.

Then consider factors like scope , career oppurtunities etc.

All the best.