Nightrest,
I will let others chime in if they have seen the 205 show more inflated numbers than the 105, but the controller should not be reporting data differently based on the model of access point.
Why don't you break it down by user and see what the data says. The AP205 is an 802.11ac device, so it is definitely possible that 802.11ac clients can achieve higher rates, as well as pass more traffic on the new hardware. Is it true? Well, we have to dig into the data to find out...
It is also possible that your new deployment with your AP205s is more optimal from an RF perspective and that leads to users being able to pass more traffic, more quickly. Is that the case? Well, dig into the data to find out.