Yeah that might leave out the ESL students, but otherwise it's not a bad cutoff system. It's much more generous than many schools.
So, if I'm reading her chart right, you'd need to be 126+ in both areas. Our local districts will take 125 in any one area (nonverbal, verbal, or quantitative). Kids who come out around 120+ in any one area are also retested on the OLSAT or the CogAT again at some of the schools in the district dd12 was in last year -- so even more generous than hers. That may be why dd12 has been a major outlier in the GT programs even though she isn't PG.
eta: I, too, don't like the idea of achievement needing to be in place in order to bother testing for ability, but there are also flaws to the broad net approach. Both of our local districts are now testing everyone in 3rd grade in a group format. When dd10 took the CogAT in 3rd grade it was in a classroom with nearly 30 other kids, a teacher who told them all to just hurry up and finish and guess if they were running out of time, and parents walking in and out of the room despite a sign on the door that said "testing, quiet please." I was waiting in the hall to volunteer and saw two parents go in and then loudly apologize when the teacher asked them to leave until testing was done. With a distractable kid with ADD, that is far from an ideal testing format.
