Q1. Is it true that most Catholics hold tradition as higher authority than actual scripture? If so, why? Q2. If Jesus had to die on the cross for our sins, then what amount of good works can allow us to earn our salvation? Do all Catholics believe that the grace of god isn't sufficient to save us? (and why?) Q3. The Trinity. Yes or No? Q4. If all humans are made in the image of God, and all Humans are equal before god, why do Catholics have a pope. Isn't having a pope whom is elevated and considered holier than others anti-scriptural according to the Sola Scriptura? As Martin Luther put it, "a simple layman armed with Scripture is greater than the mightiest pope without it".
1.) Catholics believe Christ is the root of the Faith (duh) and that He himself taught the Sacred Tradition to the first Apostles. The Old and New Testaments are a part of that Sacred Tradition which came later. The NT was written down by the Evangelists and Apostles after the events of Christ's life (and was compiled along with the OT in its definitive form and promulgated later still, also by the Catholic Church, starting with Pope Saint Damasus circa 380 AD, I believe).
2.) Catholics believe St. James the Just who wrote: "Do you see that by works a man is justified; and not by faith only? And in like manner also Rahab the harlot, was not she justified by works, receiving the messengers, and sending them out another way? For even as the body without the spirit is dead; so also faith without works is dead. (James 2:24–26)"
Q3: The Blessed Trinity is of course a core Catholic doctrine. Who do you think formulated it..? Saint Sola Scriptura? :P
Q4: The simplest answer is that Catholics have a pope because Christ instituted the office on Calvary. A more utilitarian answer might be that someone needs to be in charge in order to deal with all the bickering and theological error. Abandoning the papacy would lead to the creation of thousands of mini-popes, each presiding over his own micro-Vatican (see: 10,000+ Protestant denominations). As far as who is holier--yes, Catholics assume the Pope is a holy man, but then what religious group doesn't? But it's not a part of the religion to say that at any given moment the holiest man on earth is the Pope. It's not against the religion to imagine a simple lay Catholic somewhere might be a greater saint. In the end, though, it is part of the religion to be obedient to the Church and its councils, pope, bishops and priests. If you don't like that, don't be Catholic. Protestants have similar views on the importance of being obedient to the teachings of your pastor or whomever, btw. It seems a little hypocritical to pope bash here.