well ,thats only aesthetic , you can't say the second one is certainly more capable just because of the LCD instead of Tube monitors .
an Iranian Tor-M1
Russian Tor-M1
you can see they are some small difference
well , the Mersad-16 don't use Sayyad missiles , if it was the case then yes but it use Shalamcheh-2 . its wlikw what iran did in Fakour , we get a MIM-23 and mixed it with technology from AIM-54 and get a missile which is neither MIM-23 nor AIM-54 . shalamcheh-2 is also a MIM-23 in this case Shalamche missile mixed with technology from Standard Missile . if we want to use mersad-16 on Mowdge we must replace all the radars that control Mehrab and then put new Radars that can talk with Mersad-16 there , I don't think it worth doing on current ships maybe if somebody decide to do that in future ships but if you want to do it why not stright go to something that use more capable Taer and Sayyad missiles ?