Here is the deal LTC developers did some shady shit the first year it was built. I believe the builder could use Gpus to mine for many months while others could only mine with CPUs.
Kano has gone into detail on this and I did some research it does appear that LTC developers did that years ago.
It was more than that, too many shady things happened, I know most of them, reason I never invested in ltc, ltc has always been a way to scam for bitcoin. That is why it was created, ltc's creator, charlie lee, won't say that but its the truth.