The data match
There is some correlation with these data providers, but each data provider records various metrics, pages, and keyword sets. But that’s why there’s no perfect match.
What to do if you are hit
Google has provided advice on what to do if you have had a bad effect on the past’s core upgrade. There are no clear steps to restore, and in fact, poor scores do not signal something wrong with your websites. However, Google has produced a list of questions that need to be considered if the site is affected by a big upgrade. Google said you might see a recovery between the core changes, but the main shift you’d see will come after another core update.
Why we care!
It is always difficult to isolate what you need to do to undo any algorithmic hit your site might have seen. When it comes to google’s key changes, it’s much harder to do so. When this data and prior experience and guidance have taught us, these main changes are broad, wide, and cover many overall quality problems. But if a big upgrade has hit your site, don’t panic; we’re here to help you out. If you have any concerns about this, feel free to write in your comments.