Compare head size with weight, string pattern and strings.
A Small Area Difference
The labels refer to head area in square inches. The actual response also depends on frame geometry, weight, string pattern and strings. A 100 is not automatically more powerful than every 98.
Compare the full specification
If possible, compare models with similar strung weight and swingweight. Otherwise it is hard to separate head-size differences from the rest of the design.
Watch ordinary contact
Pay attention to your typical rally ball and off-center contact. A demanding racket that rewards a perfect swing may not improve your average point.
Keep the string setup in view
Record string material, gauge and tension. Different setups can overwhelm the relatively small head-size difference. Choose the combination that gives you repeatable depth and direction.
Pure Aero 98 and Pure Drive 100
Pure Aero 98 Gen9 pairs its 98 in² head with a 305 g unstrung weight and a 16 × 20 pattern. Pure Drive Gen11 has a 100 in² head, weighs 300 g unstrung and uses 16 × 19. You are choosing between two complete setups: head size, weight and pattern all change.
Separate the area label from the demo result
Moving from 98 to 100 in² adds about 2% in head area. Try both with comparable strings and note rally depth, late returns and off-center contact.