A bit more? That's like saying Bill Gates has a bit more money than me.
You must be pretty wealthy then... Laine is actually pretty good defensively, still lots of room for improvement but he is winning boardbattles and is playing the body while almost always being the one responsible to get the puck out of own zone lately. He has been inconsistent but seems to be finding his groove. Not sure how much you have seen from him but already in his rookie season he made tons of excellent plays. Granted there was some huge gaffs and minor misstakes too which is to be expected.
Matthews is better in this regard from my viewings but i have also seen him do some big misstakes but andersen always seem to stop it from showing on the scoreboard. Matthews is better at stick checking, boardbattles and skating out of his zone while laine is better at outlet passes and playing the body. Obviously matthews being a center he has more responsibilitties so my comparison is in relation to their position. Matthews is still far from a bergeron/kopitar/barkov type of defensive center. I do believe he may very well get there tho or atleast close.
So in short i think you are exaggerating. (Unless you are extemely wealthy)