Hi guys.
TL:DR - Tech attackers don't seem to get the right Attack boost from War Machines Prefight abilities.
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First off: not the important stuff like the Cleanse charges, and the Energy Resistance. Those seem to be working fine, as far as I can tell.
But a bit of testing in RoL against Winter Soldier confirmed that the Attack boost they're also supposed to give isn't up to par.
War Machine's Spotlight states that
any prefight grants the attacker +10% attack. The Skirmish prefight grants an (additional) Attack boost, dependent on how high your Armour is:

Well, I've tried WM with a variety of Tech champions; avoiding any who proc Armour as it causes varying Armour rating; or champs like Guilly2099 or Star Lord, who gain Attack with their combo. And the Attack boost just isn't as good as it should be. This chart shows the results, in order of how high the Champions Armour is:

I tried comparing the +10% Attack you
should get from a Support or Fortify prefight (both had the same effect) with a synergy-based +10% Attack rating from adding a 3* Ant-Man + Yellowjacket to the team. The synergy granted the expected benefit; but the Support/Fortify Prefights (yellow box) didn't. Oddly, the Prefight benefits seemed to be better for champions with higher armour - which is
only supposed to be the case with the Skirmish prefight. Some of the champions were only getting +4-5% Attack from something that is supposed to give them a +10% boost.
The Skirmish prefight (blue box)
does give a higher boost, and it clearly scales (non-linearly) with Armour; but even that Prefight only generated over +10% Attack for a few Tech champions with a base Armour of >1000. War Machine himself has one of the highest base armours in the game, so his Prefights work really well for him - it's just a shame that they seem less good for others.
Are other people seeing this? And do you have any other explanation? If not, could the Kabam Bugs team please take a look?