The motion on the Q90T won't be any different, they use exactly the same processing.
I'd go for the Sony A8 to up the chances of you not finding problems with motion, Panasonic's do have a know 50hz stutter, which is the same frame rate most sport content is broadcast at. Whether you'll notice it however is a different matter, its usually not something people notice.
Here's a bit on LCDs and OLEDs to help you decide, you can't really compare chalk to cheese so its really a decision you should narrow down first before thinking about different models:
Which is better; An OLED or a LCD? Often there are many questions in this section of the forum such as: Which is better, Samsung Q90R or LG C9? Which is better LG B9 or Sony XG9505? Should I buy a larger, lower range LCD TV or a smaller more expensive OLED/LCD? The answer isn't always the same...
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For example, if the reason you bought the Q80T was becuase you need the TV to cope with brighter conditions well, then you may find an OLED isn't suited to you and the Sony XH9505 would be a better alternative. Likewise if you found too much motion blur or that you wanted better viewing angles than the Q80T then an OLED would be very good for you.