User blog comment:FairyRaven/Fairy Tail Chapter 424: Avatar, Review and Commentary/@comment-24277053-20150316193039/@comment-7418318-20150317155310

The massive bruise she showed into the "camera" while writing her epilogue letter was also in the manga, though I'd have to check when she got it.

And in the manga he ended up throwing two darts directly at Lucy, which Natsu intercepted after breaking through the floor.

So you could say that in a way the anime lowered the intensity of the "murder attempt" since in the anime Gajeel could have stopped himself from striking Lucy, or pulled his punch at any moment, but in the manga the darts were already in mid-air and flying straight at Lucy's chest. If not for Natsu catching them, Lucy would have died.