Actually I believe the design teams acknowledged that the YF-23 was not only a lower RCS design, but faster as well, however the YF-22 had larger weapons bays, (and actually launched weapons, though not a requirement), the YF-22 also employed OVT which along with the conventional layout, drove maneuverability way up.Lol how does Inst know that YF-23 is stealthier than F-22? I mean it's never progressed beyond prototyping. While it may be possible that the shaping is indeed stealthier, there are MANY elements to VLO and even if we assume those are equal or superior to that of F-22, you need to PROVE to us that the shaping gives the YF-23 lower RCS alone if all other factors equal. This has always been internet rumour type quality content. Was never proven or officially disclosed.
While not the only factors, LockMart was ready to roll on the YF-22, while the YF-23 would have required more work, had smaller bays, etc, etc.