Actually both the ovale and the joytech units do come apart like that although I didn't know it until 'ournature' pointed it out - I had tried to separate them to see the coil and didn't want to apply much pressure to do it - it was a beta but then the other one I got it was possible (after seeing ournature's post) and was able to separate the first one then - knowing they did come apart.
That said, the structure of the 'pot' is quite different than your first picture and consistent with the one you got off the ovale site. It appears, but it may just be an odd reflection - that the spike may have some insulting material in it - not a bad idea BUT on the wrong side as far as I'm concerned - but that would apply more to the t's that have ejuice burning problems. The wire mesh around the pot on yours MAY attempt to serve a purpose depending on how the airflow goes through it, that may address leaks - again, not a problem I've seen with the c's, but the mesh may tend to act as an ejuice 'holder' as it does in a regular atty.
And if it simply doesn't work, send it back..... it isn't a joye or ovale which except for logo are the same as far as I've been able to tell having both of them. Thanks for posting the picture though... good to know what variations are out there.