The Samsung Galaxy Ace 2 totally destroys the HTC Desire C when it comes to specs and especially the screen.
HTC Desire C vs Samsung GALAXY Ace 2 - Phone specs comparison
Samsung Galaxy Ace 2: 246PPI Super PLS LCD
HTC Desire C: 165PPI LCD
I would rate a 246PPI display as average in an overall comparison, however a 246PPI display in this comparison is excellent considering it's a Super PLS LCD.
At 165PPI and with just an LCD screen, I would rate the display as poor.
Samsung Galaxy Ace 2: 1500 mAh
HTC Desire C: 1230 mAh
Samsung Galaxy Ace 2: Dual core, 800 MHz
HTC Desire C: Single core, 600 MHz
Samsung Galaxy Ace 2: 768MB RAM
HTC Desire C: 512MB RAM
Samsung Galaxy Ace 2: 5MP, F2.8, burst shot and panorama mode
HTC Desire C: 5MP, F2.8, no burst shot and no panorama mode
Samsung Galaxy Ace 2: Shoots 720p video
HTC Desire C: Shoots 480p video
The Samsung Galaxy Ace 2 is much better than the HTC Desire C. No bias here, the specs comparison sheet says it all.