I have a kingston sv300s 120gb ssd which I banchmarked using crystal mark and hd tune pro. Now hd tune pro gives me a write speed of 235913 KB/S Read 264574 KB/S and crystal gives me Sequential Write : 91.181 MB/s Sequential Read : 175.465 MB/s. Hd tune pro looks like is giving faster results .
and second question I compared the ssd banchmmarks with my seagate 4tb 5900rpm the seagate got better seq writes than ssd and close read speeds. does it make sense ? here are the results
HD Tune creates compressable data CrystalDiskMark don't, which ends up in different numbers.
The reason why SSDs are faster is Random Read/Write, where your HDD is 50 times slower compared to the SSD. Your result should be fine.