If both sides are claiming the other side is wrong or in some cases ignorant, who are you supposed to trust? How do you get two very opposite positions from looking at the same data? That generally occurs when some of the scholars have presuppositions and biases from which they base their investigation. The best we can do is listen to the evidence from both sides and make a decision. Of course world view that we have when we start the investigation will have a great impact on which ones we will accept and which ones we will reject.
There are a few things that should be asked.
1. What kind of evidence is being presented, is it physical, i.e. archeological or observational.
2. Is it based on supposition, i.e. "Here is what I think might be the case, and it sounds logical."
3. Does it rely on quoting a lot of other sources to back up the claims? Such as "Dr. Soanso and Professor J.Doe also agree with my position. This may mean that they aren't sure their arguments have enough merit to stand on their own.
4. Does it refer to sources you can't check out for yourself, or can't determine if they are legitimate?
5. How does the scholar deal with the opposing evidence, do they present it, can they deal with alternate points? Or do they ignore the opposition, attempt to twist the views or present strawman arguments?
6. Can they call hostile witnesses, that is, can they present evidence from those from the opposing position that unintentionally agree with them?
7. How much of the view is subjective, i.e. based the gut feelings, likes or dislikes of the one presenting the evidence.
8. Is any evidence or support merely assumed, or taken for granted? If something does seem assumed, find out if it actually has a solid foundation, rather than being a foundation.
9. How many opposing views are there on the same side? If those who agree on the overall picture can't agree on the details, that is a good sign, but not solid proof that there is a problem with the overall picture. Find out what the disagreements actually are.
In the end all of us have to decide for ourselves. Trusing in someone else to decide what's true for you just doesn't cut it. Those who know God however have a tactical advantage in the search for what is true. The Holy Spirit.
John 16:13
Howbeit when he, the Spirit of truth, is come, he will guide you into all truth: for he shall not speak of himself; but whatsoever he shall hear, that shall he speak: and he will show you things to come.
If you have doubts, or questions or concerns, present them to God. Or you can try to do it on your own.
John 18:38
Pilate said unto him, What is truth?