If that’s so, then I wonder where the other 16W are coming from to claim a 100W output (60W for C ports + 24W for A ports). I guess the A ports may be rated to output up to 3A (which still leaves 10W missing) but even if so, there is no standard that takes more than 2.4A without violating USB spec, as far as I know.
If they’re rated to 3A for safety reasons, like brownout protection due to out-of-spec cables with the wrong resistor (like were rampant in the early USB-C days and which Benson Leung helped kill from Amazon), then it would be a bit misleading to advertise 3A output for A ports cause no device within safety limits and within standards will use it. Plus there’s still the 10W missing.