and even worse power weapons in CC which Im really scared of
You should never be scared of power weapons in combat for 2 reasons.
1 is wound allocation, you can take 7+ power weapon wounds in a combat before you start losing models which is the only point at which the opponent has actually achived anything
2 everything dies before it attacks with the very narrow exeption of a cunning multi assault which you should be avoiding anyway. There is no single unit in the game that can handle a 10 man paladin unit in combat, do the maths if 10 stormshield termis charge the pallies they lose 7 before they even attack (assuming banner and 1 hammer in the palli unit) the 3 remaining Stormshields then punch back and kill 1.
10 stormshield termis is the best that most armies can do and that doest even cut it. to deal with them they need say assault marines to charge in and tie up a bunch of models so the stormshilds can avoid getting hit as hard. Trick is that you make a ball so that they can only engage like 4 pallies and the others pile into the termis which lose like 4.
Keep in mind also this does not include buffs granted by ICs like psycotroke grenades or the actual ICs attacks, with draigo and an inquisitor in the mix you kill more and lose less.
with a 10 man palli unit your always the big dog in the pen, you are the aggressor, the onus is on the opponent to deal with you.
One thing that might change the way you view this unit is that you should almost ALWAYS keep them as a 10 man for this reason. because its always a 10 man you should always have a banner which changes how they play dramatically. It improves the nuber of power weapon attacks by 6 on the charge 7 off the charge which is the same as another 2 paladins on the charge and 3.5 off the charge.
even if you do decide to split them you pay 2 attacks to gain 4 so its 25 pts for a whole paladin worth of attacks off the charge. On the charge you pay 3 to gain 4 so its less than half the cost of another paladin for 1/3 of a paladin worth of attacks which is less good but that is the only scenario when its worse.