I wouldn't say the 2262 is necessarily "better" (and remember I have one of those as well)but there may be applications where it seems more the "best fit" due to it's capacity for more bio capacity, and if using sand.I think hands down the ehiem 2262 is a better filter.
I will also admit that the 2262 pump on top design is better protected from sand but then again, I don't use sand, or extremely fine gravel, and recommend others don't as well regardless of what filter you use, but especially with FX's or most HOB filters.
One must also admit to the EASE of priming with an FX series(fill it halfway, plug in). A 2262/2217/2215/2213 cant evacuate air /PRIME on it's own, and although I don't have trouble priming any of them, a lot of new unexperienced users do.
That said, a 2262 is a lot more work to clean than a FX series canister, and I guarantee the average aquariest is gonna wait even longer between maintenance/cleaning than with an FX series.
Both a great filters in their own right as long as you accept the pros and cons of each.