Well, if Nintendo had offered a vastly superior HD-collection of Zeldas while only putting a version of OoT on 3DS that ran like shit and had tons of removed features while also costing almost the same as the collection, I would have the same sentiment. As it is, the LoZ CE doesn't offer anything new to people who already have those games (like me), while there are some noticeable improvements in OoT 3DS over the original (thanks to the touchscreen inventory, it's much more enjoyable to play, especially the Water Temple; graphics are noticeably improved, framerate is much smoother than in the original; Master Quest) and there's that simple fact that there is no other way to play a portable version of OoT.
There's simply no reason for me to get MGS3 3D since I already own MGS3 Subsistence (which, imo, is much more of a definitive version of MGS3 than 3D), it doesn't offer any improvements (yeah, shaders, big deal if the game runs like shit) nor does it have any extra content and there will also be another portable release of the game which will come with at least MGS2 (has it been confirmed if Peace Walker will be included with Vita's MGS Collection?). If I only had a 3DS, I'd be pissed that 3 other platforms get a much, MUCH better deal and I wouldn't support this release out of principle (though, I'm not that desperate to play MGS3 again, so I'm not even sure if I'll get the Collection in any form).