Don't forget that 30mm tubes generally have bigger objectives and are therefore brighter at higher magnification.

I have a Leupold VX3 1-5x20 which is actually 4.5 at the upper end of its range and at that magnification will produce an exit pupil of 4.4mm. Using the Leupold at 4x produces a 5mm exit pupil.

I have just ordered a Zeiss Victory HT 1.1-4x24 that is a real 4x and will give a 6mm exit pupil at that magnification. That's quite a big advantage.

I will agree regarding the weight issue as the Zeiss is 200g heavier than the Leupold although the Zeiss does have an illuminated reticle. The same Leupold with an illuminated reticle is only 88g lighter. I think its a price worth paying for superior optics.