How do you qualify average? That blue wildebeest is probably representative for most places but may have been the biggest one on the whole property you were hunting, and an absolute trophy! Having looked at the three, you may be very close to silver/gold on the top impala, probably not on the other two. If you want to get a soft tape measure and go to the SCI website, you can get instructions to measure your own trophies for yourself, but will of course not be official. If you are proud of the trophy, that is all that is important.
on my tape the first impala came out as a cracker.
the bwb and second impala measured out to bueatiful trophies.