Ok, using Babelfish I have grasped what the card does and will summarise it for you guys.
Ok, the chinese review is only the first impressions.
Acekard is made by a new company with no Gba experiences at all. It is a new start up company but they are really nice people who are working as hard as they can to support everything.
Acekard is the same size as the DS cart and the Trans-Flash is front loaded like the supercard lite and is also spring loaded. An important feature is that you do not need to flash your DS at all! A lot of people are deterred by the flashing process and is afraid that it may do something bad to the system and even brick it but with the build in passme you do not need to flash it at all.
Also it supports all flashcarts except the EZFLASH, also you can use the Acekard to play DS download games with no problems at all unlike the other Cart solutions. (unsure of this part)
Also, it advertises a clean rom system whereby you just copy and paste. Originally systems you need a game manager to convert a game to play on it but because it's a FAT system it gives an amount of lag unless you use highspeed cards. Rather than going around the FAT system the AceKard team devised a new file system format called AKFS. Which is revolutionary in itself as AKFS ahs no lags or problems no matter what the card you are using and they found FAT to be too slow and would bring many problems too. You need the game manager to format it into AKFS and to transfer the firmware but after that you just cut and paste.
To demonstrate how versatile the system is, it has been tested with every game like Animal Crossing, Pokemon Dash, Ultimate Spiderman, Castlevania and they all played perfectly. Even more impressive is that the Acekard team has not upgraded the firmware in over a month and it can still play the latest games. AceKard team has said unless Nintendo changes all the NDS games drastically, they would have no problem play any and all backups with no problems at all.
But The Acekard does have problems, which is the strengh and the weakness as well. AKFS give a better performance for backups but is not able to run FAT file programs which is used by every homebrew. Also it does not seem like someone could put in Mp3s and documents in the card for now. The Acekard team is currently working on a solution for the homebrew situation and I have trust that they would do well as AceKard seems so sincere and honest. They are now working so that FAT can be used on the AKFS file format. Also they are currently working on a Mac program for the manager which would be complete by the time the AceKard is out in the market.
For now, Acekard is under development and still in the prototype stages so these issues with it may be solved when it is released. So far these are the strengths and the faults of the Acekard as of now until the end of October when they roll out the AceKard at a cost of $45.
Edit:
When inserting a Transflash it sets it depending on the brand so that it can read it at full speed. So even if you have a cheap kingston or something there would be no lags at all in castlevania or something.
Kingmax: 4
PNY 1G: 3
Kingston 1G: 3
Sandisk entire series: 13
It also seems like they are making it very easy to skin the OS and also allows you to write homebrew using it as far I can I can understand. Officially they have not updated since september 23 the game manager and firmware and even with that they are able to play clean roms with no problems even with the latest games. So I guess that leaves them more time and is more free to work on improvements rather than making games compatible all the time like Supercard,M3 and so on.