AMD announced two new GPUs today. The Radeon RX 5500 and its mobile equivalent, the Radeon RX 5500M, will make their debuts in various machines before the end of the year. The RX 5500M, in particular, will appear in the MSI Alpha 15, which we should get in our lab later this month. The RX 5500M should offer performance somewhere between the Nvidia GeForce GTX 1660 Ti Max-Q and the GeForce GTX 1660 Ti, which would make it suitable for gaming at FHD/High settings.
https://www.notebookcheck.net/AMD-launches-new-Radeon-RX-5500-and-Radeon-RX-5500M-graphics-cards.437056.0.html
AMD advertises RX5500M to be "up to 30% higher frame rates than 1650". That's not reaching 1660ti max-q, nevertheless between 1660ti max-q and 1660ti. What's more, as we all know, those on the ppts are usually the best estimation. Highly suspect your estimation.