The Easy-Flo Brazing rod (Forney ITEM# 46111) is a self-fluxing rod. The “as brazed” tensile strength is 35,000 PSI. This product is applied via oxy-fuel/brazing.
As for using Bare Aluminum rod, the tensile strength is lower at 29,000 psi. This product requires a flux if being gas brazed. However, the recommended application process is oxy-fuel/brazing, but it can be applied with air/acetylene or TIG processes.
Finally, refer to www.jbweld.com for information on the epoxy you want to compare. However, based on a quick review of their site it seems that the epoxy provides tensile strengths of about 3,900 psi which is ~1/10th the strength of brazing with Forney Easy-Flo.