both tyres were medium compound
data showed that the z214s when new gripped a bit harder than the a050s new
The 1.04.2 time was done on the 4th trackday with the same z214s so the tyres had already lost a lot of grip.
The 1.03.0 by benny was done with Brandons A050 rear tyres (replaced my front z214s) that had been used for 2 trackdays so it provided a fair bit more grip.
The z214s are good if you just want to go hot lap after hot lap as they tend to fade alot slower whereas the a050s are only good for 2-3 hot laps per session and then they start fading.
Personally i would choose the z214s over the a050s as they are much cheaper and last longer but critics would say they arent a "real" r compound tyre so from now on ill run a050s