[JJ_SO]

I don't think mft has a tele advantage. The pixel density of 24MPix APS-C is pretty much the same as 16Mpix mft and the 52MPix 5ds isn't far off. Of course you have to carry extra glass to cover the larger sensor...

 

I do think it HAS a tele advantage (together with WW-disadvantage). 50% more pixels might be less than 50% more information, but the quality will be better when compared at the same conditions (lens quality and enough light). Plus, a 1kg 100-400 zoom is much easier to hold and balance than a 3 kg 150-600 FF