J&J is viral vector vs. Pfizer’s Lipid Nano Particles.

J&J uses DNA (inside the viral vector shell) to instruct cells to create spike vs. Pfizer’s mRNA.

Both products are gene therapy. Both enter the blood stream. Both invade cells wherever the blood takes them. Both cause cells to produce foreign proteins (spike) which then triggers immune response to destroy those cells—which is what causes the myocarditis when the cells in question are in the heart.