I will make a short announcement here and will post videos with in-depth analysis and additional proof of concept videos in the near future.
After spending a long time looking into and researching into the different input timings of all versions of Street Fighter 4 (ARCADE, PS3, XBOX 360, PC) and testing over the last 24 hours frame by frame video footage I can announce with almost 100% certainty that the XBOX 360 versions of Street Fighter 4 are 2 frames faster than all the other versions. This is most likely due to either non-existent V-Sync on xbox version (my personal guess), non-standard V-Sync implementation, or some other technical reason. I have frame by frame video footage showing ps3 version, pc version, and arcade Taito Type X 2 all running with the EXACT same input lag.
XBOX 360 input timing (2 frames faster than other versions) only matches one other version…PC with V-Sync turned off. V-Sync off is NOT the Arcade standard or the proper way to play. V-Sync greatly affects the visual input timing and with it off or not working properly (360) we get random timings for doing our visual links. So basically the Xbox runs a little faster than the other versions but it pays for it with inconsistent timing (especially 1 frame links) and throwing people coming from Arcade, PS3, and PC off.
I have made a somewhat long analytical YouTube video demonstrating my findings that can be found here https://youtube.com/watch?v=QQNYkl4WVWs.
I will make a shorter more condensed version with a catchy song and slit screen simultaneous comparison at some point in the future.
If you want proof of the botched Xbox v-sync look no further than this video of sf x tek which runs on the same engine as Sf4. https://www.youtube.com/watch?v=0kZv_eme1TM
Notice how the tearing % counter under the frame rate is jumping all over the place on the 360 yet remains locked at 0% on ps3 (proper v-sync). Keep in mind that street fighter x tekken runs on a modified engine of sf4. Also notice that the ps3 frame rates matches or exceeds the 360 (basically locked at 60fps) with 4 characters on the screen at the same time, this also makes it appear unlikely that the ps3 drops the frame rate with 2 characters on screen on sf4. The only exception could be overheating issues after extended play in hot enviroments which also affect equally (if not more) the 360.
I decided to research and experiment this all out when I noticed occasional screen tearing on the xbox version and during EVO 2014 players Daigo and Sako drop numerous common combos with Evil Ryu at a staggering consistency. These are combos that I can do with 90% efficiency that make no sense for players at that level to be fumbling. This fell into a suspicion I’ve had for awhile that it’s not the ps3 version that’s off but actually the XBOX. It makes sense as I remember older footage from EVO 2009 sf4 played on ps3 where Daigo CONSISTENTLY hit 1 frame links (and he came from playing exclusively on Arcade) while I now see him, Sako, and other Japanese players dropping easy 2 frame links left and right. It seems that Japan is also unaware of this difference as they also believe the Xbox version to be superior because it’s faster and probably don’t realize that it’s actually running too fast.
The consequences of this information must bring into question MANY tournament results over the last few years (including this years EVO) when players that have been playing almost exclusively on Arcade cabinets (mostly Japanese pros) come to USA or other tournaments and perform less well than expected. On the flip side this also explains why many of the best American (and EU) players get slaughtered when they go to Japanese tournaments that are frequently played on Arcade.
Finally let me bring to attention that this has nothing to do with online play (netcode) which is overall better on Xbox. I do have suspicions though that perhaps the xbox version only feels better online due to the reduction in input lag helping in this scenario and the greater number of hard wired players. In this regard the xbox version remains superior.
FOR OFFLINE AND TOURNAMENT PLAY PS3 OR PC SHOULD BE THE STANDARD IN ORDER TO MATCH THE INPUT TIMING OF THE ORIGINAL ARCADE VERSION WITH PROPER V SYNC IMPLEMENTATION.
I will post more videos with additional proof of concepts in the near future.