What are you talking about? The Excelsior is Engineer heavy. I owned and flew one.
I am uncertain as to what game you are playing? The T5 Excelsior has an 8 Turn Rate, which is the best of all Cruisers. It has a Lieutenant Commander Tactical BOFF slot, giving it access to many good Tactical abilities which other Cruisers do not have. It also has a third Tactical Console slot for added firepower. The Excelsior was the best Federation Tactical Cruiser in the game until the T5.5 Tactical Odyssey was introduced.