if everything remain the same vs if everything remains the same

Some examples from the web:

• Under a flat-line export scenario, with no rise in US exports, and if everything else remains the same (always a heroic assumption), overall real GDP growth would converge on that 1.4% bogey.
• Change does not mean changing something so that everything remains the same, as one of Lampedusa's characters suggested - that would be a confidence trick.
• We can certainly take it as read that, if everything continues in the same old way, nothing will remain the way it was, and that we will be running the risk of provoking a new trade war.
• Everything remains the same None of my predictions will became real this year
• Everything remains the same, the same commanders getting richer and richer. They've been doing it for years and they keep making more money.
• Accordingly, within the sphere of production everything remains much the same as before.
• The general diagnosis remains the same.
• The ball position itself also remains the same.
• Our request remains the same, owl.
• Some political change is essential even if everything stays the same.
• It seems as if everything would be just the same even without him.
• If everything is OK, get out of your vehicle and do the same thing with the other persons involved in the accident.
• Although its purpose remains the same,
• But the question before you remains the same.
• He was going to remain the same.
• So his head remains the same size.
• But still the basic facts remain the same: there is no vaccine against HIV and no cure for AIDS related diseases.
• The situation remains the same until further notice.
• Yet our great paradox remains the same...
• Lack of rehearsal aside, the plan remains the same.

Some examples from the web:

• Under a flat-line export scenario, with no rise in US exports, and if everything else remains the same (always a heroic assumption), overall real GDP growth would converge on that 1.4% bogey.
• Change does not mean changing something so that everything remains the same, as one of Lampedusa's characters suggested - that would be a confidence trick.
• We can certainly take it as read that, if everything continues in the same old way, nothing will remain the way it was, and that we will be running the risk of provoking a new trade war.
• Everything remains the same None of my predictions will became real this year
• Everything remains the same, the same commanders getting richer and richer. They've been doing it for years and they keep making more money.
• Accordingly, within the sphere of production everything remains much the same as before.
• The general diagnosis remains the same.
• The ball position itself also remains the same.
• Our request remains the same, owl.
• Some political change is essential even if everything stays the same.
• It seems as if everything would be just the same even without him.
• If everything is OK, get out of your vehicle and do the same thing with the other persons involved in the accident.
• Although its purpose remains the same,
• But the question before you remains the same.
• He was going to remain the same.
• So his head remains the same size.
• But still the basic facts remain the same: there is no vaccine against HIV and no cure for AIDS related diseases.
• The situation remains the same until further notice.
• Yet our great paradox remains the same...
• Lack of rehearsal aside, the plan remains the same.