I just looked at the amounts of builds online and in several site "galleries"... For over two years after its release there was not a SINGLE built 1/48th Hasegawa A-5+ FW-190 to be found anywhere on the web... The 30:1 ratio I cite is probably an understatement...
This is probably in part because of the (deserved) poor reputation of Hasegawa's A-3/A-4s, which by association effectively ruined the "perception" of those later-war kits that came out a year later in 2008... In fact, from the A-5 onward, the clear parts were completely re-worked into real masterpieces, and they are still the only accurate FW-190 canopies ever offered by some margin, this especially so for the blown version...
See how the Tamiya effort compares, having a similar width excess of 20%(!), just like the Eduard kit, compared to the real windshield (the acual thing being identical to Hasegawa on the left) as measured on a relic at 250 mm wide per 480 mm long(the Eduard windshield is longer and thus better than the much too short Tamiya windshield here, which also sits far to vertical on the model):

To be fair to Karaya's effort, it is easier to make an open-engine model using the Eduard FW-190A because the Hasegawa kit is full of thick, hard brittle plastic in all the openable areas, so it would be a real bear to do an open wing root gun bay kit or even just an open engine kit because of the huge solid square plastic "cube" moulded in there to support the engine...
Despite its accuracy excellence, I did not find the superior Hasegawa kit to be pleasant to build, and it might be even less so if a lot of heavy-duty cutting and sawing needs to be done to open panels...
This is so much so, I am considering purchasing the Karaya correction kit to see if I could not adapt the Hasegawa canopy to the Eduard kit...
The only thing holding me back is that, like all FW-190 kits, Eduard did not bother replicating the "wingtip washout" feature of the FW-190 wing, neither did Hasegawa, and this is very difficult to do neatly on this aircraft type because there is a complicated panel line with heavy rivets going right into the most heavily re-worked wing leading edge area (unlike the Spitfire, which shares this washout feature, but in a smoother area)...
So far only 2 Tamiya kits have ever tried to replicate this important aerodynamic feature in 1/48th scale kits: The P-47 and the A6M... Note that the P-51, Me-109, Ki-43, P-39, P-40, P-38 are all among the many fighter types that did NOT have the leading edge washout feature, and probably none of the bombers and transport did either.
Note again that the lack of this feature is very severe on the Spitfire which underlines the leading edge with a yellow line to very obvious effect... Not so obvious under the 190s camouflage but still...
No doubt the Karaya set makes the Eduard kit a much more attractive option, and the replacement resin cowl gun throughs are apparently longer and more accurate than the Hasegawa cowl gun throughs...
Come to think of it, I might even look them up...
Gaston