I can see both points of view here, Samsung only has an exploded screen damaged to where the glass is coming out, clearly this seems a near impossibility on its own.
On the other hand is a potential issue, maybe it had a hairline Crack all along or something.
I assume warranty repair explodes screens since more times than not its the users fault (not saying this is the case).
As for Apple, if you think you will wall into their retail store or a best buy with a cracked screen and expect any different outcome I am afraid you will be disappointed.
Sorry to hear this has happened to you, sad if this really is an issue. On the other hand surely it's cheaper at 279 to fix the screen than at 849 for a new iPhone.
Either way enjoy the new device hope it brings a better experience.