This is a helpful comparison of the two men and their philosophical approach. I wish it also discussed Wolterstorff. A highlight:
In a similar vein, both have argued that the Christian philosopher ought not to ply his trade from a position of pretended autonomy or neutrality, as if that were a prerequisite of participation in the broad philosophical community. On the contrary, Christian philosophy should be conducted (unashamedly) within the bounds of, and building upon, Christian doctrinal/doxastic commitments. On this point see Van Til, passim, and Plantinga, esp. ‘Advice to Christian Philosophers’.