I agree -- the f-22 and j-20 length difference is two meters at the highest estimate but the latter looks to have a much greater volume despite similar wing sizes from placing the engines further back resulting in greater fuselage volume.
Not just look though. The F-22's bodylength (head to engine) is only around 16 to 17 meters. The plane is very compact compared to the YF-23, which has longer range and superior high speed performance.