The SVG is much brighter. I considerably leveled down the brightness in the png file because it was way to bright when it was placed in the game. Actually even the brightness levels are very different, but you don't see most of it in the small preview since the brightest parts are the the very fine lines. Especially because of them the sprite looks very real in the game, where I used it.

However. You can adjust the brightness how ever you want. The SVG file is available.

I guess different surroundings need yery different settings...