Porro might not smash people but he is aggressive
Know what you mean though - a booming tackle raises the crowd 100%
Porro's "aggressive" in that he'll rashly leap in to make an interception - miss both ball and man leaving the entire team exposed.
What he won't do is commit 100% to a tackle where he has to put his own body on the line. Saw it today. Seen it all season. And I'm getting sick of it. I like him but he's just not getting it done.