We are measuring thermophilic.
We believe the composition is the same except for the extract.
Sorry, canned beverages (and thermophilic procedures) not my area.
Currently, APHA specifies Tryptone Glucose Extract Agar (contains beef extract) for the heterotrophic plate count procedure in testing bottled water
Standard Methods Agar is equivalent to the formulation of Plate Count Agar (Tryptone Glucose Yeast Agar) as listed in Standard Methods for the Examination of Water and Wastewater , 19th ed., AOAC, and USP. (1-4) The American Public Health Association (APHA) recommends use of the medium for performing the "standard plate count" on dairy products. (6)
Both are used for plate count measurements but as to whether their results will be significantly different, no idea.
For comparing count data, normally recommended to use the same procedure.