Ok, i agree with the material that we have we can't do much, we should have more tested people.
About albanian haplogroups: if you are speaking of current day tests yes it is a lot similar as you said, but listen to this: in the middle ages there were some gegs that crossed the shkumbin river and settled in tosk lands, but when i mean some i mean a good amount of gegs, but still it wasn't common of tosks, look at the big amount of E subclades existing and look at how this subclades are found among albanians, almost only V13 while te other are minoritary, almost non existent, te only explanation to this is that
it rapidly expanded from a small area and a small number of carriers who rapidly grew and became dominant, so E is found at such n extent among albanians because of this effect.
Now, about J2b, J came into balkans and was a completely different population, it settled mostly into southern albania, coming from the steppes of Russia,passing through bosnja, partially settling even there
So what happened is that albanians are the product of Indo european tosks carriers of language, and of haplogroup R1b-L51 probably fron pannonia(hungary)+czech republic, and maybe if we could proove it one or more subclades if I2 and of E-V13 + maybe something else(tests will show) + steppe J2b.
Tosks absorbed J2b and so modern day tosks are R1b, J2b and maybe I2 but E-V13 is a typical characteristic of gegs, the tosks you said that have E-V13 are gegs that crossed the shkumbin river in medieval times.