Bacterial susceptibilty test

Hello everyone the susceptiblity test of urine culture for 62 years old female patient revealed multidrug resistance e. Coli result as follow
Sensitive cefoperazone /sulbactam zone diameter 21mm
Resistance to ampicillin /sulbactam, amoxicillin /clavulanic acid, impinem, piperacillin /tazobactam, ciprofloxacin, levofloxacin, oflaxacin, gentamycin, amikacin, aztreonam, fosfomycin, nitrofuratoin, sulpha/trimethoprim,ampicillin,cefepime,ceftazidime,ceftriaxone,cefuroxime,cefoxitin
My question is it usual that bacteria be sensitive to cefoperazone/sulbactam and resistant to piperacillin /tazobactam is this result logic however high resistance to every one?!
Patient took antibiotics for a year to treat cellulitis