The Garmin Forerunner 165 and Forerunner 170 are being compared by various outlets, with some discussing the differences and whether the Forerunner 170 is worth an upgrade. However, there is some confusion as some headlines mention a Forerunner 70, which may be a separate model or a misnomer. The comparisons suggest that the Forerunner 170 may offer new or improved features, including proper training tools, but the specifics of these differences are not universally agreed upon.