It is often difficult to directly compare photocurrent values reported in the literature, since very often different measurement protocols are used (e.g. stabilized vs. dynamic measurements as detailed in ), and no standardization is applied for electrolyte type -NaOH, KOH; acidity -molarity -0.1M, 1M, 3M; and power of solar simulator used, etc. Here we compare hematite-based photoanodes prepared and measured in the same laboratory, using strictly the same setup and similar conditions (electrolyte and solar simulator). Within these conditions, we observe lower photocurrent values, higher transients, and higher onset values for the "model" photoanodes, obtained by AO-MBE epitaxial growth , compared to those obtained by the ACG synthesis method .