Nah. Not at all. Just to give you the figures, the Beat's 1.2 litre engine develops 79 BHP @ 6,200 rpm and 108 NM of torque @ 4,400 rpm (which are figures par for the course) and has a weak bottom end which makes it tedious to drive in the city. 2nd gear is weak (read ownership reviews) and wont take you anywhere in the city. Mid range is so-so and the engine loses steam above 4500 rpm and also gets noisy. The only great thing about this engine is the fantastic refinement at idle (zero sound). Since your confusion is between the Brio and the Beat, I suggest you take a back-to-back test drive of both cars within a very short gap (say, like 1 hour - its the BEST way to decide between two cars). Drive the Beat first under various traffic conditions in the city and on the highway and then go to the Honda showroom and drive the Brio under similar conditions and tell us how you felt about both engines.
The best 1.2 litre petrol engines in Indian hatchbacks are the i20's 1.2 Kappa, The Brio's 1.2 iVtec, and the Swift/Ritz's 1.2 K series (not necessarily in that order). I have driven almost all 1.2s in the country so I can say this with absolute certainty. Take a test drive
and then take your call.