Not necessarily. Sometimes heavy weight we tend to recruit other muscles to help out. Very seldom do i do barbell row. The form is juz ridiculously hard to maintain throughout the set, worst with heavy weight. A t bar row is a much more efficient exercise imo.

I would suggest trying out diff type of rows. Bb row is one of the best, but also one of the easiest to stray due to the form issue.

Strong lift and Starting Strength 5 x 5 misses out on one important aspect of training, ie deloading. The program only asked you to deload once you fail a certain rep range for 3 workout in a row i believe. Deload should be planned and not when you fail to reach the required reps. Its like jamming the accelerator full speed and only 'stops' when you hit a wall. If you care about consistency and longevity, please do a deload once 2 months or where appropriate. Going all out is gonna hit your CNS very very hard especially you are doing multiple compound exercise each workout.

U can always add one pressing movement in between the 2 back exercise to increase the density od yr workouts