I wouldn't be so sure, there was a similar post recently about fixed-wing. The gist of it was that an EASA PPL holder got a 61.75 ticket, then bought an N-reg PA46 (which requires an EASA type rating, but not under FAA). The CAA argued that his underlying PPL would not allow him to fly a PA46, therefore his FAA ticket wouldn't let him. The FAA legal team came back and said they didn't consider the lack of a type rating as a limitation, since it didn't exist under their rules, and were quite happy for him to fly it on a 61.75. Using the same logic, a helicopter 61.75 should be legal to fly anything below 12,500lbs!