But basically every reverski gets beaten by the same forwardski because the later one doesn't needs as much pips in engines than the reverski and therefore has either more pew pew or more shields available to detsroy the reverski.
This is more or less correct in spreadsheet terms. In two identical builds, reverski with 4-0-2 pips confers no DPE advantage over 'forwardski' with 4-0-2 pips. It also makes aiming slightly more difficult (the rotational model is slightly different, in reverse).
However, even with identical builds, reverski, by forcing a facetank (as neither party can move outside the fire target cone of the other ship) limits evasion as a tactic. It doesn't eliminate it - after all, a PA can still be made to miss, by either the reverser or the follower, using side-thrust at the correct time - but the effectiveness of evasion is reduced as both ships are almost always within the other's fire arc.
Furthermore, though, most fights are not fought between identical builds. Reverski permits whichever of the two opponents has better facetank spreadsheet damage to force a partial (not complete, as noted above, but partial) facetank.
In very broad terms, reverski is helpful towards whoever has the better sustainable DPS (via DPE) and/or most effective hit points.
At its very worst, if the reversing ship has advantages of both speed and greater damage-over-time and hit points, it can achieve something similar to both pilots switching off thrusters at an agreed distance and simply firing, rather like a realtime strategy game.
This is why many object to it - it limits (not deprives, but limits) the ability of the better pilot and/or more manoeuvrable ship to overcome 'on paper' disadvantages or even speed disadvantages via manoeuvring.
But I would repeat, as in my first post in this thread, that the problem with a simple, outright nerf to reverski is that it would make the Big Three (Four?) unable to defend themselves against well-flown medium ships, unless some other buff is provided.
If the shipyards sold only (e.g.) FdL, FAS, Chieftain and Clipper, I would have no problem with a straight nerf ... but there's more!