How do I compare two projects from different developers?

Assign different weights based on your goal.
An investor may allocate 25% to location and 20% to rentability and exit liquidity, while an end-user may place greater weight on livability and finishing quality.
Do not compare marketing against marketing—compare value against value.
Even if one project looks more glamorous, the other may be the stronger investment if its entry price is lower and its exit path is clearer.