I know we struggled against a couple backups in 05'... 9 years ago. Don't really care. Let's look at the past 5 years. Here's what I can recall off the top of my head...
09' vs. OU: Landry was completely ineffective against us.
10' vs. UT: No difference between starter and backup effectiveness
12' vs. OSU: Backup torched us
12' and 13' vs G Tech: backups were no problem for us
13' USU: backup was no problem for us
13' UT: backup was no problem for us
Please feel free to add to or correct this list.