You're missing the critical point here. The Bible makes it clear that what happens in the Tribulation Period will be worse than anything that's ever happened on the earth before. Yet you're trying to compare them is equal.
As well, God does not put the church through his wrath.
Revelation 3:10 states quite clearly the Saints will not endure Tribulation Period time of testing.
Although this touches upon subjects we have been over many times before, your initial point does not.
I would question, greatly, the wisdom behind anyone claiming persecution and tribulation could get any worse for some of our brothers and sisters out there in the world...either now or over the past 2000 years. Perhaps we might expect it to grow to be world wide, that is true, but that is not the point of conversation here. The point is what level of tribulation and persecution would or "could" make a true born again believer in Jesus Christ turn from their faith.
And I say that such an implication...that people just haven't been getting it bad enough yet, is to show a level of ignorance of what is going on in this world that does a horrific disservice to our fellow Christians who loose everything in the name of Christ.
Do you realise, that in North Korea, Christians are being dragged into the streets, with their children. When they, or their children do not deny Christ, they are forced to watch their children hung. Then they are then forced to lie on the ground in a row, and then they are rolled over with a road-roller machine...crushed to death.
One man in the Middle East tells of how a man and his son wouldn't denounce Christ, so the mob killed the mans son, chopped his head off and played soccer with his sons head right in front of him. Still, he did not deny Christ.
Throughout the years people have been put through the most horrific forms of torture, torment and suffering beyond what you could ever even think up, and still they claimed Christ as Lord.
To imply that they just haven't suffered 'bad enough' yet to deny him, is an insult to all those martyrs who are currently under the altar who wear white robes and are being told to wait, just a little while longer. Don't mock their memory.