Uploading an image from site admin vs dam admin does not have any differences?
- Yes, it is same . As the image will get stored in same location in whatever way you upload it.
. But is it recommended to upload images from siteadmin view?If not, why ?
- Always use damadmin for this , as that gives you more flexibility to handle your images . If you open your images via siteadmin , it will open it like below.

But via damadmin , you have more control over your images

Hope this helps !!
Thanks
Veena