Ok, all of you need to hold your horses. This is a
FAN MADE version rather than published by Sukhoi. Sukhoi had actually published a similar time line for SU-30 rather than SU-50, which this particular fan copied and made into a chart that you see posted in this post. The OP has intentionally got you excited for nothing.
There are no SU-50s' for Iran.
And best of all, i bring proof with me.
Allow me to mention the most important line in the article:
Here is the original time line that the fan copied from, it is for SU-30, and THIS was made by Sukhoi.
Dont worry my Iranian friends, you still have
Qaher-313.