Not neccesarily true. What is hard to find is a guy who does both well. There are a number of fast speed rush guys who get pressure and sacks. The trade off is being able to rush the passer and still hold up decently against the run. Heck, LaBoy could get 10+ sacks a year if he could stay healthy and stay on the field as many snaps as KVB. LaBoy had 6.5 sacks in 2005 even though he completely missed 2 games and split time with Odom. However, at 250-260 pounds LaBoy is not very strong against the run and gets abused by 325 pound LTs. Also, our OLBs are not beasts against the run which requires our DEs to be more than outside speed rushers.