The interior of it around the controls and pilot are way messy.

I mean ffs 
And plus to further support the issue with FreeSpace and their borked sizes, observe how several Interceptors are massive in comparison to a decent amount of heavy fighters, like the Astaroth or Horus being slightly longer and wider than the Ares, the size of the Pegasus being comparable to the Tauret despite being a stealth recon fighter, the Dragon is incredibally small considering the size theme of the rest of the displayed ships, the Perseus and Ulysses also follow suit but to a lesser degree.