hap ac3 - worse than hap lite?

Capsman is pretty much the same, but with provision.

On 2.4 GHz the antenna gain is
hAP Lite = 1.5 dBi
hAP ac Lite = 2 dBi
hAP ac3 = 3 dBi

Audience has 3.5 gain, but there’s a huge difference in my experience. Cant wait to test new cap ac xl

I know there’s no much point of setting high tx power, but try and explain to user that “more bars doesn’t have anything to do with wifi quality”. Also in apartment installation there’s kitchen over the wall from the room mikrotik sitting in and network is barely visible without high tx values. And no, there’s no microwave working.
Currently at night there’s overall CCQ 90-100% in the country house and around 75-80% in apartment for 2.4 ghz. And its totally normal for each of them, considering environment.
Why I set a topic like this: in the apartment there was hap lite before hap ac3 and it covered the whole area and it was at the same spot. I love abbreviations like EIRP, but can you tell me why tiny onboard antennas worked better than huge dipole antennas? Same room, same spot, nothing has changed. And there’s 3 of those hap ac3 routers we have problems with in that way.