While progressive overload is probably the most essential factor for growth and strength over time, we all have to accept we can't lift more each workout. Look at power lifters - they cycle their heavy lifting to get ready for competitions and then dial it down. A deloading phase - at least if you like your joints and don't want to get injured. I always strive to do more reps, more TUT, another 2.5 lbs on exercises from the workout before but it isn't possible all the time - too many factors. Add, if we could all do this forever can you imagine how strong people would be?
Too many factors to guess at with your one workout, don't give it a second thought. Just make sure your rested for your next workout and see how you feel.